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General Questions

General questions about getting started with SilverStripe that don't fit in any of the categories above.

Moderators: martimiz, Sean, biapar, Willr, Ingo, swaiba, simon_w

Sort existing values over nulls


4 Posts   339 Views


16 September 2013 at 8:43pm (Last edited: 16 September 2013 9:23pm), Community Member, 44 Posts

I have a Task model with a DueDate SS_Datetime field. To see the 'soonest due' tasks first, I sort my tasks by DueDate ASC.. This works as expected, apart from the fact that tasks without due dates are shown before tasks with due dates.

I was wondering if there was a custom sort; or a field modifier like sort('DueDate:exists') etc?

Alternatively, I can create a HasDueDate Boolen field that's set to !empty($this->DueDate) onBeforeWrite, but maybe there is a better way?


18 September 2013 at 2:01am Community Member, 94 Posts

Maybay this is a little bit nicer:

In ModelAdmin:

public function getList(){
      $list = parent::getList();
      $list->exclude('DueDate', ' '); //or try: $list->exclude('DueDate', null);
return $list;

With these function you exclude all empty DueDates from listview.


18 September 2013 at 4:02am Community Member, 215 Posts

$list->where('DueDate IS NOT NULL');


18 September 2013 at 7:37pm (Last edited: 18 September 2013 7:41pm), Community Member, 44 Posts

Your suggestions are much appreciated guys, but I'm looking for a SORT not a filter :) (sort null before asc).

So I will probably do 2 data queries, one for null due dates and one for tasks that have them.